I have a question. Can you clarify what you mean because I too had the weirdest period last week. I had lightheadedness, frequent urination, and all the symptoms of a pregnancy/UTI but I bled like my period for 5 days with 3 of those days being heavy and the remainder light days. Was your period heavy or what kinda flow did you have? What all have you been experiencing.... be detailed too cause I'm curious. Thanks.
Bleeding and cramping while pregnant could indicate a miscarriage. That does not mean that is happening in your case but it is important you follow-up with your OBGYN ASAP for monitoring.
Best of luck to you.